ELEVENTH CORPS SIGNAL STATION, [June 21, 1863]-2. 15 p. m.

General SLOCUM: Do you know of the presence of an infantry force between Leesburg and the Blue Ridge, above Snicker's Gap? The enemy's cavalry seem to be making in that direction.

HOOKER,

Major-General.

HEADQUARTERS TWELFTH ARMY CORPS,
June 21, 1863.

General HOOKER:

I know of no infantry force between here and the Blue Ridge, and have no cavalry and no means of obtaining information of the movements of the enemy.

H. W. SLOCUM,

Major-General.

June 21, 1863.

General HOWARD:

Two brigades of infantry are with Pleasonton, and he expects to engage Stuart's entire cavalry force with all of his available.

JOHN F. REYNOLDS,

Major-Genera.

GUILFORD SIGNAL STATION, June 21, 1863.

General HOWARD:

Pleasonton attacks the enemy's cavalry at Aldie this morning. Tell Slocum this from headquarters Army of the Potomac.

JOHN F. REYNOLDS,

Major-General.

HEADQUARTERS ARMY OF THE POTOMAC,
June 21, 1863-10. 45 a. m.

General SLOCUM, Leesburg, via Poolesville:

General Pleasonton has been directed to send a regiment of cavalry to you, to scout the country between Bull Run and the Blue Ridge, to ascertain if the country is clear of the enemy.

DANL. BUTTERFIELD,

Major-General.

EDWARDS FERRY, June 21, 1863-11. 45 a. m.

Major-General BUTTERFIELD, Headquarters Army of the Potomac:

The bridge has been finished two hours, and reported to General Slocum. Bridge, 1, 340 feet long. Please send instructions as to who is to cross.

CHAS. N. TURNBULL,

Captain Engineers, Commanding Battalion.